FWLF-1631-xx DWDM SFP – June 2009
F i n i s a r
Finisar Corporation Page 6 June 2009 Rev E2
V. Optical Parameters
Parameter
Symbol Min Typ Max Units Notes/Conditions
TRANSMITTER CHARACTERISTICS
Center Wavelength Spacing 100 GHz Corresponds to
approximately 0.8 nm
Modulated Spectral Width
∆λ
20
0.2 0.3 nm Full width, -20dB from
max. See note 3
Transmitter Center Wavelength –
End of Life
λ
c
X - 100
X X + 100
pm X = specified ITU center
wavelength
Transmitter Center Wavelength –
Start of Life
λ
c
Y - 25
Y Y + 25
pm Y = specified BOL
center wavelength
Side Mode Suppression Ratio
(SMSR)
SMSR 30 dB Modulated
Optical Rise/Fall Time t
r
/ t
f
160 ps Unfiltered, 80% -20%
Transmitter Optical Output Power P
out
0 +4 dBm Average power coupled
into single mode fiber
Transmitter Extinction Ratio OMI 8.2 dB
Transmitter Eye Opening 10 % OC-48 eye mask margin
Transmitter Jitter (peak to peak) 75 mUI Parameter per GR-253
2
section 5.6 for OC-48 B
Tolerable Back Reflection BR -14 dB See note 4
Relative Intensity Noise RIN -120 dB/Hz
Dispersion Power Penalty at
2400ps/nm
DPP 3.0 dB See Note 5
RECEIVER CHARACTERISTICS
Optical Input Wavelength P
in
1520 1570 nm
Receiver Jitter Generation 75 mUI Parameters per GR-253
2
section 5.6 for OC-48 B
Optical Input Power
(BER < 10
-12
)
P
in
-28 -9 dBm 2.5 Gb/s w/
PRBS 2
23
-1
Optical Input Power –
Receiver Damage Threshold
+6 dBm
Receiver Reflectance R
RX
-27 dB
Dispersion Noise Penalty at
2400ps/nm
DNP 3.0 dB See Note 6
Notes:
1. Parameters are specified over temperature and voltage, at end of life unless otherwise noted.
2. All parameters are measured on a Finisar SFP Evaluation Card unless otherwise noted.
3. For accurate ∆λ
20
measurements, an OSA with a resolution band width of ≤ 20pm is recommended.
4. Tolerable back reflection is the max back reflection level at which the power penalty will be <1dB.
5. Dispersion power penalty is measured in loop back with OSNR set to 28 dB. Data rate and pattern used same as specified
for Optical Input Power. Dispersion power penalty is the difference in Rx power at a BER of 10
-12
for 0ps/nm and
2400ps/nm.
6. Dispersion noise penalty is measured in loop back with Rx power set between -9dBm and -22dBm. Data rate and pattern
used same as specified for Optical Input Power. Dispersion noise penalty is the difference in OSNR at a BER of 10
-12
for
0ps/nm and 2400ps/nm.
